JPH03121178U - - Google Patents
Info
- Publication number
- JPH03121178U JPH03121178U JP3057990U JP3057990U JPH03121178U JP H03121178 U JPH03121178 U JP H03121178U JP 3057990 U JP3057990 U JP 3057990U JP 3057990 U JP3057990 U JP 3057990U JP H03121178 U JPH03121178 U JP H03121178U
- Authority
- JP
- Japan
- Prior art keywords
- steering
- gear
- wheel
- electric power
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Steering Control In Accordance With Driving Conditions (AREA)
Description
第１図は、本考案による電動式パワーステアリ
ング装置の一実施例を示すもので、そのギヤボツ
クスを示す縦断面図、第２図は、そのパワーステ
アリング装置の制御回路を示すブロツク図、第３
図は、その制御回路のコントロールユニツトから
出力されるパワーアシスト指令信号の特性を示す
グラフ、第４図は、そのパワーステアリング装置
に用いられているラツクピニオン式ステアリング
ギヤのギヤ比の変化を示す説明図、第５図は、そ
のステアリングギヤの特性を示すグラフである。
１……電動式パワーステアリング装置、２……
ラツク軸、４……ステアリングギヤ、５……ラツ
ク歯、６……ピニオンギヤ、７……ピニオン軸、
１０……トルクセンサ、１１……回転センサ、１
２……操舵センサ、１４……コントロールユニツ
ト、１５……パワーユニツト、１７……電動モー
タ、２０……ボールねじ機構。
FIG. 1 shows an embodiment of an electric power steering device according to the present invention, and FIG. 2 is a longitudinal sectional view showing its gearbox. FIG. 2 is a block diagram showing a control circuit of the power steering device.
The figure is a graph showing the characteristics of the power assist command signal output from the control unit of the control circuit, and Figure 4 is an explanation showing changes in the gear ratio of the rack and pinion steering gear used in the power steering device. FIG. 5 is a graph showing the characteristics of the steering gear. 1...Electric power steering device, 2...
Rack shaft, 4... Steering gear, 5... Rack tooth, 6... Pinion gear, 7... Pinion shaft,
10... Torque sensor, 11... Rotation sensor, 1
2... Steering sensor, 14... Control unit, 15... Power unit, 17... Electric motor, 20... Ball screw mechanism.
Claims (1)
操舵トルクを検出する操舵センサと、 その操舵センサからの出力信号により制御され
て操舵補助トルクを発生する電動モータとを備え
、 その電動モータによる操舵補助トルクが、前記
ステアリングハンドルから転舵輪に至る操舵系の
、ステアリングギヤと転舵輪との間に作用するよ
うにされている電動式パワーステアリング装置に
おいて； 前記ステアリングハンドルの中立位置近傍にお
ける前記ステアリングギヤのギヤ比が、その両側
位置におけるギヤ比よりも大きくされていること
を特徴とする、 電動式パワーステアリング装置。[Scope of Claim for Utility Model Registration] A steering sensor that detects steering torque applied to a steering system from a steering wheel, and an electric motor that generates steering assist torque under the control of an output signal from the steering sensor; In an electric power steering device in which a steering assist torque by a motor is applied between a steering gear and a steered wheel of a steering system extending from the steering handle to the steered wheels; near a neutral position of the steering wheel; An electric power steering device, characterized in that the gear ratio of the steering gear is larger than the gear ratios at both sides of the steering gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030579U JP2539097Y2 (en) | 1990-03-27 | 1990-03-27 | Electric power steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030579U JP2539097Y2 (en) | 1990-03-27 | 1990-03-27 | Electric power steering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03121178U true JPH03121178U (en) | 1991-12-11 |
| JP2539097Y2 JP2539097Y2 (en) | 1997-06-18 |
Family
ID=31533289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990030579U Expired - Lifetime JP2539097Y2 (en) | 1990-03-27 | 1990-03-27 | Electric power steering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2539097Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014203574A1 (en) * | 2013-06-17 | 2014-12-24 | 日産自動車株式会社 | Steering device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840131A (en) * | 1971-09-29 | 1973-06-13 | ||
| JPS63291770A (en) * | 1987-05-25 | 1988-11-29 | Fuji Heavy Ind Ltd | Control device for electric power steering gear |
-
1990
- 1990-03-27 JP JP1990030579U patent/JP2539097Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840131A (en) * | 1971-09-29 | 1973-06-13 | ||
| JPS63291770A (en) * | 1987-05-25 | 1988-11-29 | Fuji Heavy Ind Ltd | Control device for electric power steering gear |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2539097Y2 (en) | 1997-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |